In the Entity Picker window we search for our Rule, select it and click PICK.

After we picked a Rule we need to Update Rule Inputs. DOB Rule input shows up and we click an icon to editit.

In the resulting Edit Rule Inputs window we select Form Component in the Input Type drop-down. Then, we select our DOBdata value in Form Data Name drop-down. In this example we are going to run this Rule when DOB value is changed. When finished, click OK to save and continue.

Then, we edit Validation Break Text. This message will show up on the Form if our Validation Rule returns “False”.

From the Break Level drop-down we can select Fatalor Warning. Fatal level will not let the user to submit the Form. Warning level will only display the message.

Next, we pick the controls to which we need to apply this Validation to (in this example Button and Date Time Picker). In the Rule Execution settings we pick events that will Trigger this Validation Rule(in this example Date Time Picker : Value Changed).